EVK-L20, EVK-L21 - User Guide
UBX-14000422 - R03
Early Production Information
Starting up
Page 9 of 17
1.9
Enabling error result codes
Command sent by DTE (user)
DCE response (module)
Description
AT+CMEE=2
OK
Enables the cellular module to report verbose error result
codes.
1.10
PIN code insertion (when required)
Command sent by DTE (user)
DCE response (module)
Description
AT+CPIN="8180"
OK
Enter the PIN code, if needed (enter the PIN of the SIM card
– 8180 is written here as an example).
AT+CLCK="SC",0,"8180"
OK
Unlock the PIN at power on (the last parameter is the PIN of
the SIM card – 8180 is written here as an example).
AT+CLCK="SC",1,"8180"
OK
Lock the PIN at power on (the last parameter is the PIN of
the SIM card – 8180 is written here as an example).
1.11
Registration on a cellular network
Command sent by DTE (user)
DCE response (module)
Description
AT+CREG?
+CREG: 0, 1
OK
Verify the network registration.
AT+COPS=0
OK
Register the module on the network.
The cellular module automatically registers itself on the
cellular network. This command is necessary only if the
automatic registration failed (AT+CREG? returns 0,0).
AT+COPS?
+COPS: 0,0,"I TIM",7
OK
Read the operator name and radio access technology (RAT).
1.12
Switching off the EVK-L2x
To switch off the EVK-L2x, send the +CPWROFF AT command. Make sure to use this command before switching
off the main power, otherwise settings and configuration parameters may not be saved on the EVK-L2x.
